CVE-2022-3924
26.01.2023, 21:16
This issue can affect BIND 9 resolvers with `stale-answer-enable yes;` that also make use of the option `stale-answer-client-timeout`, configured with a value greater than zero. If the resolver receives many queries that require recursion, there will be a corresponding increase in the number of clients that are waiting for recursion to complete. If there are sufficient clients already waiting when a new client query is received so that it is necessary to SERVFAIL the longest waiting client (see BIND 9 ARM `recursive-clients` limit and soft quota), then it is possible for a race to occur between providing a stale answer to this older client and sending an early timeout SERVFAIL, which may cause an assertion failure. This issue affects BIND 9 versions 9.16.12 through 9.16.36, 9.18.0 through 9.18.10, 9.19.0 through 9.19.8, and 9.16.12-S1 through 9.16.36-S1.Enginsight
| Vendor | Product | Version |
|---|---|---|
| isc | bind | 9.16.12 ≤ 𝑥 < 9.16.37 |
| isc | bind | 9.18.0 ≤ 𝑥 < 9.18.11 |
| isc | bind | 9.19.0 ≤ 𝑥 < 9.19.9 |
| isc | bind | 9.16.12:s1 |
| isc | bind | 9.16.13:s1 |
| isc | bind | 9.16.14:s1 |
| isc | bind | 9.16.21:s1 |
| isc | bind | 9.16.32:s1 |
| isc | bind | 9.16.36:s1 |
𝑥
= Vulnerable software versions
Debian Releases
Ubuntu Releases
Ubuntu Product | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| bind9 |
| ||||||||||||||
| isc-dhcp |
|
Common Weakness Enumeration